1Mii Bluetooth DAC HiFi LDAC Bluetooth Receiver Bluetooth Audio Receiver DA Converter 5.3 RCA/AUX 3.5mm/Optical Output LDAC/aptX HD/APTX LL/AAC Compatible, Connect to Speakers/Soundbars/Cars, Receive Hi-Res Wireless Music from Mobile Phones/Tablets/PCs The data volume transmitted by LDAC is three times that of the original SBC, and it also supports the transmission of 24-bit 96 kHz (Hi-Res) audio. This allows you to enjoy higher quality Hi-Res audio. - Model Name: DS200Pro - Bluetooth Codec: aptX HD, LDAC, AAC, SBC - Data Transfer Rate: Up to 990kbps - Function: HiFi Bluetooth Receiver - Antenna: With external antenna - Accessories: All included. I opened it to check the operation, but I am selling it because I have no opportunity to use it. The protective film has not been removed. Connecting is very easy and connects immediately. No sound interruption.